Five analog manometers (pressure gauges), used to measure liquid or gas pressure in various systems. The scale is given in bar and sometimes also in MPa (megapascals).
What they show:
• The pressure value is displayed with a rotating pointer.
• Most are graduated 0–10 bar or similar intervals.
• Some have a dual scale: eg bar and MPa.
• Marked with SCALE VALUE = 0.5 bar which means that each marking on the scale represents 0.5 bar.
Areas of use:
• Monitoring of pressure in pressure vessels, hydraulic and pneumatic systems
• Laboratory or industrial environments where overpressure or vacuum is measured
• Can also be used for calibrating other pressure instruments
Manufacturer:
Several are marked with WIKA, a German manufacturer known for pressure and temperature instruments.